Valve.



W. C. MARSH.

VALVE.

APPLICATION FILED SEPT. 9, 1913.

Patented Sept. 22, 1914.

@mii/uwen UNTTEDA sTATEs PATENT OFFICE..

WILLIAM C. MARSH, OF IDUNKIRK, NEW YORK.

VALVE.

Specification of Letters Patent. Patented Sept, 22, 1914,"-

Application led September 9, 1913. Serial No. 789,012.

To all whom it may concern:

Be it known that I, WILLIAM C. MARSH, a citizen of the United States, residingat "Dunkirk, in the county of Chautauqua and va full, clear, and exact ldescription of the invention, such as will enable others skilled and use the same. Y

My invention relates to water valves for radiators, and of that type commonly known as packless, and has for its object to provide certain improvements in the-construction of the same as will be hereinafter more definitely pointed out and claimed, reference being had to the accompanying drawing, in which:

Figure lis a central vertical sectional view of my improved valve. Fig. 2 is an enlarged and lsomewhat exaggerated view of the cone seat of the valve stem. Fig. 3 is an enlarged transverse sectional view of the valve, its cap being shown in elevation. Fig. 4 is a View of the struck up blank from in the art to which it appertains to make which the valve is formed.

..end, and is screw -threaded both interiorly and exteri'orly, as shown, and has formed in its interior near its upper end a centrally apertured ledge or shelf 6, upon which rests aconed ring 7, preferably of some com osition materlal, t e upper face of said le ge or shelf havingformed thereon an annular rib 8 adapted to bite into said coned ring 7 when the latter is forced into position, which is done by' means of a threaded retaining nut .9 in engagement with the inte! rior threads in the valve body` or casing 1.

Disposed within the valve body or casing -l is the lower end of the Valve stem 10, suitably shaped at its upper end to receive an operating handle, and near its lower end enlarged at 11 forming a flat upper face that is rovided with a run-way 12 to receive sultable ball bearings 13. Resting on said ball bearings is a disk 14 that in turn recelves -a disk spring 15,`which is inverted and is held in place. by a threaded nut or cap 16 engaging the exterior screw threads on the valve body or casing, and by which' the tension of said spring 15 may be controlled, said cap or nut 16 being locked in any adjusted position by means of a locking 'screw 17. The enlargementll of the valve lstem is cone shapedon its under surface at 18 to abut against the coned face of ring 7, and, as shown somewhat exaggerated and 'in detail in Fig. 2, said cone surfaces are of Aunequal pitch, whereby a sharp bearing will be provided between said surfaces at the lower edge of the coned surface 18. A portion of the valve stem .10 below the coned surface is squared at 19, and ythe reduced end 20 below the same is round and screw threaded. A

The rotary valve 2l is `formed from a sheet of non-corrosive metal initially stamped in the shape shown in Fig. 4, the same being then bent into cylinder form to bring into proximity the ends thereof, which are semi-circularly recessed at 22'to form the circular discharge therethrough. Said valve is alsoformed with a series of slots 23 near its upper edge to receivel the lugs 24 formed on the valve cap 25, which latter is formed with a central squared opening 26 to receive the squared lower end 19 of the valve stem 10, and is thickened into a hub 27 around said v-opening 26, said hub `having two oppositely disposed extensions 28, which are adapted to engage against a downwardly projecting stop 29 formed on the underside of the ledge or shelf 6, whereby but a half turn may be given the valve 21.

In assembling, the previously stamped .valve is bent to substantially cylindrlcal form, and with its'cap 25 mounted thereon with its lugs 24 engaged in the slots 23 in said valve, is inserted into, the valve body 1 through the aperture 2 until the squared opening 26 in said cap engages the similarly s uared lower end 19 of the valve stem 10,v

w ere it is fastened in position by means of a nut 30 screwed onto the threaded lower end 20 of the valve stem. The valve 21 being free to expand when released zwill form duce the friction of said valve the valve casing 1 is recessed at 31, to the contour shown in dotted lines in Fig. 1, and in order to provide for circulation when the valve is closed I provide a small aperture 33 in the center of said valve. l

By my novel construction of coned surfaces forthe valve stem I provide most effectively against any leakage around said valve stem, While the novel construction of the valve 21 and its method of sup ort from its cap 25 provides most effective y against excessive tension orv frictional resistance in opening and closing said valve, the tendency during the rotary, movement being to reduce the diameter of the valve, which 1t is free to do from the fact that its edges normall are slightly separated at 32, as seen in Fig. 3, and which causes it to act in a manner similar to that of a springwhen being wound, and like a spring, to again expand when the rotary tension 1s relieved, so that it will form a perfect t upon the machined interior surface of the valve casing 1.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A valve, embodying a casing, a valve stem rotatable therein, and cone bearing surfaces on said valve stem and in said casing, said cone surfaces being of slightly different pitch to provide a sharp bearing between the two, and being in constant rotatable contact with each other. y

2. A valve, embodying a casing, an apertured shelf or ledge within said casing, an annular rib on said shelf or ledge, a cone ring of composition material resting on said ledge or shelf, a retaining nut screwed into said casing to bear on said cone ring and force it into biting contact with said rib, and a. valve stem having a cone surface engaging the cone surface of said ring.

In testimony whereof I have hereunto setl my hand in the presence of two subscribing witnesses.

WILLIAM C. MARSH. lVitnesses:

N. F. GoULD, T. J. CUMMINGS. 

